Telestream Lightspeed Live Capture User Manual page 270

Managing Video Sources
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Creating and Configuring ST 2110 Sources
Freeze on LOS—When enabled, causes the source to hold the last good frame if the
signal is lost. When disabled, LOS causes the LOS Video Test Pattern to be displayed. For
details, see
Preferred Processor
Note: If this control doesn't display, processor balancing on this model server is
performed automatically, and no end-user adjustment is available, or advanced mode
is disabled (see
sources—disable it when capturing UHD/4K.
When enabled (C2+ and earlier), processing associated with each Capture | Tape job is
assigned to the assigned CPU on the server's multi-core CPU to prevent inefficient
process mapping across CPU sockets during heavy loads, typically when several
sources are capturing concurrently.
On C4 and later models, for IP sources you can manually set affinity to a specific socket.
If you create IP sources in order and use them in order, balancing is automatic. However,
for example, if you delete every other IP source, the remaining sources do not balance
and you can use can use this control to balance them. If IP sources are maintained long
term, it may be helpful to assign each source a preferred processor.
Disabling this option during multi-source capturing may result in excessive CPU usage.
When Preferred Processor is disabled, affinity is set to 0
Affinities).
Initial Video Format (SD formats not supported). Initial Video Format enables a
recording session to start before signal is established, so that a recording in progress
does not get locked as loss of signal at 1080p30. This is especially useful when you are
using a workflow with recurring segments or it is set to activate on power up, or signal
is lost or power is lost temporarily. When the ST 2110 Source loses connection with the
sender, the video is replaced with a test signal as configured in Initial Video Format.
Specifies the video format to ingest when no video signal is being received. When the
signal starts or restarts (and ignore lost frames is enabled in the Live Capture workflow),
the signal is recorded, provided that is the same format as initial video format you have
specified.
Sync Timeout—ST 2110 sources consist of multiple streams: video, audio, and ancillary
data. When more than one stream in a given source is patched, Live Capture attempts
to align the timestamps of the streams so they are in sync. If it can't sync the streams in
less than the time (in milliseconds) in this field (2000 ms by default) it displays an error,
and does not add the stream.
LOS Video Test Pattern—Applies only when Freeze on LOS is disabled. Specifies the
test pattern to display during LOS. For details, see
LOS Audio Test Signal—Specifies the audio signal to use during LOS.
Max Time-Shift—Specifies the maximum duration of video that the time-shift frame
buffer can hold, which is used to delay the source for workflows using this source.
Loss of Signal Behavior.
Managing System Settings). Use only when capturing SD/HD SDI
(Balancing CPU Processor Group
Loss of Signal Behavior.
Lightspeed Live Capture User Guide